There are no solutions.
We will continue to burn fossil fuels until the
EROI drops to 1. Renewables will never be able to replace fossil fuels. Fusion is always away 20 years out. If you are not familiar with
"The Limits to Growth" you can get a free copy from the link.
Welcome to peak oil doomerism 101. Been there, done that, presented material to the NSW Upper House cross bench, co-ordinated an "End of Suburbia" half-hour cut (with permission of the producers) that was presented in the NSW Parliament theatre. Had various exchanges with James Howard Kunstler. Got the mental health issues after 19 years of it.
The EROEI of renewables is FINE.
Even the old doomer Charles Hall's co-founder of the EROEI concept is now saying solar has double the EROEI of oil. I mean, as I show here, Doomers (like Mike Stasse) LOVE to quote Hall and Murphy's old paper. But not so much with Murphy's new paper!
Mike Stasse’s latest trick is to promote a 13 year old study by (now Emeritus Professor) Charles Hall and Professor David Murphy that concludes nuclear EROEI is too low. The problem is, Stass…
eclipsenow.wordpress.com
Normal economic pressures for efficiency have reduced the materials included and increased the energy output per unit energy invested.
Other studies show the EROEI is fine.
There's a graph making rounds lately showing the comparative EROIs of different electricity production methods. (EROI is Energy Return On Investment - how much energy we get back if we spend 1 unit of energy.
rameznaam.com
What is energy returned on energy invested (EROI)? Energy returned on energy invested (known as EROI or sometimes EROEI) is the ratio of the amount of
www.vikramsolar.com
“Electrify Everything” makes everything more efficient, and lower Energy Return power sources get more bang for their buck!
While oil was this incredibly dense energy source with a very high EROEI - the Internal Combustion Engine is terribly inefficient. Diesel wastes 50% of the energy as it burns, and petroleum is worse and throws out 80% of the energy in a gasoline car. It’s all thrown away as heat and only 20% of the gasoline turns into what we want - forward motion! That's 1/5th the energy doing what we want.
How Efficient are Engines: Thermodynamics and Combustion Efficiency
Electric cars only throw away 23% - and convert the 77% other energy into forward motion. That's almost 4/5ths of the energy doing what we want.
Are electric cars more efficient than combustion or hybrid cars?
Only 1/5th of gasoline works, but with EV's only 1/5th of it is waste.
How does all this work out with EROEI? It appears oil HAD to have a higher EROEI (as measured by mere BTU’s at the well head) because burning it in an Internal Combustion Engine is SO wasteful! Instead of asking how much thermal energy there is in a barrel of oil when counting the EROEI, maybe we should emphasise what we really want - how FAR that oil takes you? Instead of measuring solar’s EROEI as “only” 10 times the energy it took to make the solar panel - what are those solar panels DOING with that EROEI? What work are they achieving by going into electric motors that USE 4/5ths rather than WASTE 4/5ths the energy?
In other words - to measure like with like - should we be dividing oil’s EROEI by how much more wasteful the ICE is? An ICE wastes 3.4 times more energy than the EV. Should we divide oil's EROEI by that much? Is the whole notion of oil’s super-high EROEI questionable now that we’ve seen how pathetically inefficient the ICE is? Is the whole notion of solar’s ‘pathetic’ EROEI also invalid - at least in the car part of the transport sector?
Then there’s the energy SYSTEM to consider. The worldwide oil market burns a lot of oil mining it in foreign lands, shipping it around the world and then driving it up and down highways. Solar panels just have to be installed once every 30 years! Then with an EV you've got an oil refinery on your roof!
Global shipping: When every nation has their own renewable energy, we will not have to ship oil, gas, or coal around the world. That means 40% of global shipping will just stop! There are a variety of options to replace shipping bunker oil with clean fuels - but one of them is to use a small ThorCon nuclear reactor in each ship. (ThorCon is a Molten Salt Reactor that cannot melt down as it is already a liquid.) IF we install them in the remaining ships, they go 30% faster. This means each ship is now carrying 30% more cargo in the same time. This means we're down to less than half of global shipping, with less trains and trucks carrying the dirty stuff around as well.
Local power efficiencies: When we've "Electrified Everything" especially transport, so many more options become viable. Australia has some of the biggest trucks in the world. Janus Australia have a battery-swap system for trucks that can carry 100 tons. They go 400km or 500km, then just swap the huge batteries. A guy on a forklift does it. This also means the batteries don't have to fast charge - which is less stress on the local grid and less stress on the batteries. They estimate they can run 10 trucks just from the warehouse roof! In a country town between the big cities, a Janus battery swap might even consider buying a local paddock to add more solar for their battery charging. With enough solar charging enough cheap batteries during they day, they can stock up fresh batteries for the night. It's just THAT cheap!
Janus Electric
SUMMARY: Electrifying everything will not only solve climate change, increase national energy independence and security, decrease long expensive supply lines, decrease pollution and lung disease in the population, and get us into an energy system that could last millions of years - but it is also just more efficient and will ultimately be cheaper and more convenient. You'll see. It's coming, fast!